Brad Pitt shows off new look in rare public appearance: Photos

Six months after his wife, Angelina Jolie, filed for divorce, the 53-year-old actor debuted his noticeably slimmer physique at the Los Angeles premiere of his production company's new film, The Lost City of Z.

Days earlier, the Oscar nominee was photographed looking "shockingly thin and gaunt" (in the words of Daily Mail) while taking a stroll in LA.

Image: Getty

But insiders say Brad's new look is nothing to worry about.

"He's healthy and much happier," a source told People in late March. "Things with his family have improved, all is being addressed privately, and it's serving everyone in the family well."

Another source added that he's been working out "almost daily".

Brad in January 2016 (left) and on April 5, 2017; Images: Getty, AAP

Since splitting from the mother of his six children, Brad has kept mostly out of the spotlight. He promoted his film Allied last November and also appeared as a presenter at the Golden Globes, but declined to walk the carpet or pose for photos.

Instead, he's been filling his days working on sculptures at a private LA art studio and listening to a variety of mournful tunes.

"He recently spent many days and even nights working on a sculpture," a source close to the actor told People. "People close to him are happy that he has found something new to be passionate about."

Angelina, 41, filed for divorce from Brad after two years of marriage in September 2016. They're in the midst of private custody negotiations for the couple's children Maddox, 15, Pax, 13, Zahara, 12, Shiloh, 10, and twins Vivienne and Knox, 8.